单选题  ____ I can see, the weather is not likely to change in a few days.

单选题  Students should develop a right attitude ____ tests.

单选题  Betty arrived ____ London ____ the evening of June 1.

单选题  She can ____ speak ____ write Japanese.

单选题  Such an excellent idea would never occur ____ me.

单选题  Some experiments are very difficult, ____ others are very easy.

单选题  We all agree wearing a long dress is appropriate ____ a formal wedding.

单选题  Nothing could be seen in the dark street ____ a few street lights.